Steal schema2sql module from yams
It has no user inside yams, and we need it here if we want to be able to
reference the (cubicweb-only) entities table from other tables.
Related to #4846892
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s specific hooks and operations"""